21st century Goguryeo - Chapter 527 - Season 2 Book 21 Shadow of War 2 -3-7 The Eve of the Storm

Shao Qing’s only regret in life is that she blindly fell in love with a worthless man. She gave up everything for him, but in exchange was run over by his conniving mistress when she was close to her delivery date. Fortunately, Heaven left her a way. Crimson rain fell from the sky, the end of the world arrived, she resurrected in the morgue and gave birth to a little monster. Turning into a half human, half zombie freak; her son neither human, nor monster; they have no other choice but to rely on zombies’ crystal nuclei to develop their special abilities and continue living. This debt, she’ll definitely repay that cheating couple!

- Description from Novelupdates

“ You must level down to the rock bottom of hell”, a demonic voice said when he was summoned to the other side.

Seth Johnson was 16 when he was sacrificed in a cleansing ritual organized by his parent’s cult, to find himself reincarnated and transmigrated to a new world that was already on the brink of extinction.

People were divided by their magic power’s ranking to live in different regions and sat on ascending levels in the sky.

Being born again as Isiah Duncan, the brother of Lucas Duncan the prodigy who brought the apocalypse to this world was confusing to him, he who had no powers to survive, until he was forced to level down instead of leveling up, using the diabolic core of magic instead of the divine one …

Mystery is the nourishment that keeps me from being ordinary.

It has been 20 years since he came to a world similar to the modern European background. With his early wisdom, Fei Lin learned a skill and finally became a decent person.

Originally thought that he would marry a wife and have children and live this life in a dull way, but found that there is another world under the shadow of the world.

In that world, there are occultists who practice esoteric techniques and master extraordinary powers.

It is weird to spy on humans in the dark and feed on humans.

There are evil god believers who worship the evil god, please the evil god through bloody sacrifices, and exchange power from the evil god.

There is an evil god who wanders outside the world, peeps at the world, and only infiltrates the power of scales and claws, which is enough to cause people to fall.

With the mystery as nourishment, he is no longer ordinary after 20 years of ordinary.

- Description from novelbuddy

Having lived a normal life all his life and died without being able to fulfill his desire and when he’s given a task by a god, watch how he takes the protagonists girls while making it hard for the hero.